HM514400CS-6 Просмотр технического описания (PDF) - Hitachi -> Renesas Electronics
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HM514400CS-6 Datasheet PDF : 27 Pages
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HM514400B/BL, HM514400C/CL Series
Read, Write, Read-Modify-Write and Refresh Cycles (Common parameters)
Parameter
Random read or write cycle time
RAS precharge time
RAS pulse width
CAS pulse width
Row address setup time
Row address hold time
Column address setup time
Column address hold time
RAS to CAS delay time
RAS to column address delay time
RAS hold time
CAS hold time
CAS to RAS precharge time
OE to Din delay time
OE delay time from Din
CAS setup time from Din
Transition time (rise and fall)
Refresh period
Refresh period (L-version)
HM514400B/BL, HM514400C/CL
-6
-7
-8
Symbol Min Max Min Max Min Max Unit Notes
tRC
tRP
tRAS
tCAS
tASR
tRAH
tASC
tCAH
tRCD
tRAD
tRSH
tCSH
tCRP
tODD
tDZO
tDZC
tT
tREF
tREF
110 — 130 — 150 — ns
40 — 50 — 60 — ns
60 10000 70 10000 80 10000 ns 19
15 10000 20 10000 20 10000 ns 20
0
—0
—0
— ns
10 — 10 — 10 — ns
0
—0
—0
— ns
15 — 15 — 15 — ns
20 45 20 50 20 60 ns 8
15 30 15 35 15 40 ns 9
15 — 20 — 20 — ns
60 — 70 — 80 — ns
10 — 10 — 10 — ns
15 — 20 — 20 — ns
0
—0
—0
— ns
0
—0
—0
— ns
3
50 3
50 3
50 ns 7
— 16 — 16 — 16 ms
— 128 — 128 — 128 ms
9
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